216324325 has 24 divisors (see below), whose sum is σ = 309623040. Its totient is φ = 146856000.

The previous prime is 216324313. The next prime is 216324341. The reversal of 216324325 is 523423612.

It is not a de Polignac number, because 216324325 - 2¹⁷ = 216193253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 216324293 and 216324302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11556 + ... + 23794.

It is an arithmetic number, because the mean of its divisors is an integer number (12900960).

Almost surely, 2^216324325 is an apocalyptic number.

216324325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

216324325 is a deficient number, since it is larger than the sum of its proper divisors (93298715).

216324325 is a wasteful number, since it uses less digits than its factorization.

216324325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12357 (or 12352 counting only the distinct ones).

The product of its digits is 8640, while the sum is 28.

The square root of 216324325 is about 14707.9680785620. The cubic root of 216324325 is about 600.3001507501.

Adding to 216324325 its reverse (523423612), we get a palindrome (739747937).

It can be divided in two parts, 21 and 6324325, that added together give a triangular number (6324346 = T₃₅₅₆).

The spelling of 216324325 in words is "two hundred sixteen million, three hundred twenty-four thousand, three hundred twenty-five".